Apparently, Madonna didn’t think much of Sharon Stone and Whitney Houston’s careers and even called them “horribly mediocre” in an old letter. Well now, Stone has penned and shared her response to the insult via social media.

The letter that had the Basic Instinct star speaking out appeared on the Gotta Have Rock and Roll site and is set to be auctioned off next week. The piece was allegedly written by Madonna in the ’90s and was addressed to “J,” who is believed to be an actor she used to date named James Enos. In it, the Material Girl described her mood at the time as “foul” and explained that she was not “comfortable” with the direction her life was going, before slamming Houston’s singing career and Stone’s acting career.

“It’s so unequivocally frustrating to read that Whitney Houston has the music career I wish I had and Sharon Stone has the film career I’ll never have,” Madge allegedly wrote. “Not because I want to be these women because I’d rather die, but they’re so horribly mediocre and they’re always being held up as paragons of virtue and some sort of measuring stick to humiliate me.”

After the letter had surfaced online, Stone replied in a Facebook post, but instead of clapping back at the pop singer, the actress proved that she is a class act by taking the high road. The 59-year-old wrote that she is a “friend” to Madonna and won’t let the old note ruin how she feels about her.

Something Stone was upset about though was that fact that the letter was made public, and she called that “absurd.”

According to the auction site, the letter came courtesy of Madonna’s former art consultant, Darlene Lutz. The auction opens on July 19, and the handwritten note is expected to go for between $3,000 and $5,000.

[Image by Kirsty Wigglesworth/AP Photo, File]

Just last week Madge made headlines over another private letter, but that one was addressed to her and written by Tupac Shakur. TMZpublished portions of it, which was written on Jan. 15, 1995, while the rapper was serving a sentence for sexual assault at the Clinton Correctional Facility. Tupac and Madonna dated for two years, and in his very revealing note to her, suggested that he was breaking things off because she’s white. That piece is also scheduled to go up for auction next week and is expected to fetch much more than the insult letter as the starting bid for the prison letter is $100,000.